| 1 | // RUN: %clang_cc1 %s -verify |
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| 2 | |
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| 3 | // The reinterpret_cast operator shall not cast away constness. |
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| 4 | struct X {}; |
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| 5 | struct Y {}; |
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| 6 | void f(const int * X::* Y::* *p) { |
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| 7 | // This applies for similar types... |
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| 8 | (void)reinterpret_cast<int * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} |
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| 9 | // ... and for cases where the base type is different ... |
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| 10 | (void)reinterpret_cast<float * X::* Y::* *>(p); // expected-error {{casts away qualifiers}} |
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| 11 | // ... and for cases where pointers to members point to members of different classes ... |
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| 12 | (void)reinterpret_cast<int * Y::* X::* *>(p); // expected-error {{casts away qualifiers}} |
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| 13 | // ... and even for cases where the path is wholly different! |
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| 14 | // (Though we accept such cases as an extension.) |
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| 15 | (void)reinterpret_cast<double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} |
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| 16 | |
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| 17 | // If qualifiers are added, we need a 'const' at every level above. |
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| 18 | (void)reinterpret_cast<const volatile double Y::* X::* * *>(p); // expected-warning {{casts away qualifiers}} |
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| 19 | (void)reinterpret_cast<const volatile double Y::*const X::*const **>(p); // expected-warning {{casts away qualifiers}} |
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| 20 | (void)reinterpret_cast<const volatile double Y::*const X::**const *>(p); // expected-warning {{casts away qualifiers}} |
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| 21 | (void)reinterpret_cast<const volatile double Y::*X::*const *const *>(p); // expected-warning {{casts away qualifiers}} |
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| 22 | (void)reinterpret_cast<const volatile double Y::*const X::*const *const *>(p); // ok |
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| 23 | |
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| 24 | (void)reinterpret_cast<const double Y::*volatile X::**const *>(p); // expected-warning {{casts away qualifiers}} |
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| 25 | (void)reinterpret_cast<const double Y::*volatile X::*const *const *>(p); // ok |
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| 26 | } |
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| 27 | |
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